Jacob hahn



UNITED STATES PATENT ()FFICE.

JACOB HAHN, OF NEV YORK, N. Y.

PROCESS OF DISSOLVING ANlLl NE COLORS.

SPECIFICATION forming part of Letters Patent No. 404,193, dated May28, 1889.

Application filed November 9, 1888. Serial No. 290,381. (No specimens.)

To all whom it may concern.-

Be it known that I, JACOB HAHN, of New York city, New York, have invented an Improved Process of Producing Aniline Colors, of which the following is a specification.

This invention has for its obj eat to produce an improved compound of aniline colors and vegetable oils without employing an intermediate agent, alkali, or acid.

Heretofore it has been found impracticable to produce a perfect solution of aniline colors and vegetable oil without employing an intermediate agent, as without the same the aniline would refuse to'dissolve in the oil. I have devised a process which produces this desirable union. In carrying out this process I take aniline colors that are soluble in water such as fuchsine, Bismarck brown, chrysoidine, methyl violet, malachite green, phosphineand mix them with fifty to one hundred parts of water. The mixture is heated, perhaps ten minutes, until the color is completely dissolved. I then pour into a suitable vessel, which rests ina hot bath or on an oven, any desired quantity of vegetable oil, preferably linseed-oil, and mix it with about one-tenth of the dissolved aniline color. The

mixture is stirred, and when the oil is boiling I pour in the rest of the aniline. Brisk stirring is continued until the water in which the color was originally dissolved has evaporated. The oil is now removed from the hot bath or fire, and is ready for use, being permanently united with the color. The object of the introduction of the first portion of the dissolved aniline is to prevent explosion by the sudden addition of the water in which the color is dissolved to the pure boiling oil.

The stirring must'be very brisk, so that the water is brought to the surface and may there evaporate. Otherwise, as the water has a tendency to settle at the bottom, it would forcibly throw the oil up.

The color when completed may be used either alone orv it maybe mixed with paint or varnish.

I claim as my invention The process of directly uniting aniline with vegetable .oil, which consists in dissolving aniline in hot water, adding part of the solution to oil, boiling the mixture, adding the remainder to the boiling oil, and stirring the mixture until the water has evaporated, substantially as specified.

JACOB HAHN. \Vitnesses:

F. v. BRIESEN, A. J ONGHMANS. 

